Pond Logic® Ultra Pondweed Defense® works on pond weeds including submerged, floating and emergent weeds. This pond herbicide may be used for short term control of Duckweed in slow moving water. Use pond weed control solution with Treatment Booster™ Plus all season-long on actively growing plants for best results. Early season emergent treatments may require additional applications.

How To Apply

Mix the amount of Ultra Pondweed Defense® and Treatment Booster™ Plus (if using) with pond water in a tank sprayer according to label instructions. Use a pressurized pond sprayer to spray the Ultra Pondweed Defense® mixture directly onto to the target weeds.

When To Apply

Ultra Pondweed Defense® has no temperature restriction, but it should only be applied when weeds are actively growing. Use with Treatment Booster™ Plus for best results.

Restrictions

Wait 3 days before using treated water for human drinking water.

Wait 1 day before using treated water for livestock and domestic animal consumption.

Wait 5 days before using treated water for irrigation.

Chemical Application Best Practices

Anytime you use chemicals to treat algae or weeds, please keep in mind the following:

Treat your pond in sections. Treat only half the pond's surface at a time. During hot weather or when treating heavy growth, it is important to treat no more than ¼ of your pond at a time and wait the full 14 days before re-applying. This helps lower the risk of fish loss during hot weather or when treating heavy growth.

Once the algae or weeds have browned & died, use a rake to remove as much dead material as possible. This prevents an accumulation of dead plant material and muck.

Replacement Parts

Weeds Treated

The first step towards effectively treating any pond weed is proper identification. Pond Logic® Ultra PondWeed Defense® Aquatic Herbicide is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.